Haptic Perception of Material Properties and Implications for Applications

2013 ◽  
Vol PP (99) ◽  
pp. 1-12 ◽  
Keyword(s):  
Thermal Properties ◽  
Material Properties ◽  
Haptic Perception ◽  
Medical Training ◽  
Haptic Interaction ◽  
Haptic Devices ◽  
Tactile Displays

Perceiving the material properties of objects through touch is generally superior to the perception of shape. We review major material properties accessible through haptic interaction, along with theoretical accounts of the underlying perceptual processes. These include roughness, friction, compliance, and thermal properties. Subsequently, we describe algorithms that have been used to render these same material properties on haptic devices. We then point to applications that have capitalized on the accessibility of material through touch, including tactile displays, simulation of mechanical mechanisms in the automobile, and medical training simulators.

Bi-manual Haptic-based Periodontal Simulation with Finger Support and Vibrotactile Feedback

2021 ◽  
Vol 17 (1) ◽  
pp. 1-17
Author(s):  
Said Chehabeddine ◽  
Muhammad Hassan Jamil ◽  
Wanjoo Park ◽  
Dianne L. Sefo ◽  
Peter M. Loomer ◽  
...  
Keyword(s):  
New York ◽  
Medical Training ◽  
Dental Students ◽  
New York University ◽  
Haptic Interaction ◽  
Vibrotactile Feedback ◽  
Quantitative Evidence ◽  
Support Mechanism ◽  
Probing Depth ◽  
Group 2

The rise of virtual reality and haptic technologies has created exciting new applications in medical training and education. In a dental simulation, haptic technology can create the illusion of substances (teeth, gingiva, bone, etc.) by providing interaction forces within a simulated virtual world of the mouth. In this article, a haptic periodontal training simulation system, named Haptodont, is developed and evaluated for simulating periodontal probing. Thirty-two faculty members from New York University College of Dentistry were recruited and divided into three groups to evaluate three fundamental functionalities: Group 1 evaluated bi-manual 3 Degrees of Freedome (DoF) haptic interaction, Group 2 evaluated bi-manual 3 DoF haptic interaction with a finger support mechanism, and Group 3 evaluated bi-manual 3 DoF haptic interaction with finger support mechanism and vibrotactile feedback. The probe and mirror interactions were simulated with the Geomagic Touch haptic device whereas the finger support was implemented using the Novint Falcon device. The three groups conducted two probing tasks: healthy gingiva scenario with no pockets (2- to 3-mm depth) and periodontitis scenario with deep pockets (4- to 8-mm depth). Results demonstrated that experts performed comparably to clinical settings in terms of probing depth error (within 0.3 to 0.6 mm) and probing forces (less than 0.5 N). Furthermore, the finger support mechanism significantly improved the probing accuracy for periodontitis condition in the lingual region. The argument that probing the lingual region is more difficult than the buccal region is supported by quantitative evidence (significantly higher probing depth error and probing force). Further research is planned to improve the usability of the finger support, integrate the Haptodont system into the pre-clinical curriculum, and evaluate the Haptodont system with dental students as a learning tool.

Dissimilar Materials Laser Welding Characteristics of Stainless Steel and Titanium Alloy

2013 ◽  
Vol 465-466 ◽  
pp. 1060-1064 ◽  
Author(s):  
Zazuli Mohid ◽  
M.A. Liman ◽  
M.R.A. Rahman ◽  
N.H. Rafai ◽  
Erween Abdul Rahim
Keyword(s):  
Thermal Conductivity ◽  
Stainless Steel ◽  
Titanium Alloy ◽  
Thermal Properties ◽  
Material Properties ◽  
Dissimilar Materials ◽  
Scanning Speed ◽  
Welding Parameters ◽  
Melting Region ◽  
Offset Distance

Welding parameters are directly influenced by the work material properties. Thermal properties such as thermal conductivity and melting point are very important to estimate the range of power required and the allowable scanning speed. However, when two or more different materials are involved, modifying lasing parameters are not enough to counter the problems such as imbalance melting region and weak adhesion of contact surface. To counter this problem, the characteristics of welding beads formation for both materials need to be clarified. In this study, comparison of welding beads constructed using the same scanning parameters were done to understand the different and similarity of melted region for the both materials. Actual welding of the both materials were done under different offset distance to obtain a balanced melting area and well mixed melting region.

Augmented Reality Systems and Haptic Devices for Needle Insertion Medical Training

2021 ◽  
pp. 133-151
Author(s):  
Cléber Gimenez Corrêa ◽  
Claiton de Oliveira ◽  
Silvio Ricardo Rodrigues Sanches
Keyword(s):  
Augmented Reality ◽  
Medical Training ◽  
Needle Insertion ◽  
Haptic Devices

scholarly journals Effect of Fiber Geometry and Representative Volume Element on Elastic and Thermal Properties of Unidirectional Fiber-Reinforced Composites

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Siva Bhaskara Rao Devireddy ◽  
Sandhyarani Biswas
Keyword(s):  
Thermal Conductivity ◽  
Finite Element ◽  
Thermal Properties ◽  
Elastic Modulus ◽  
Cross Section ◽  
Representative Volume Element ◽  
Material Properties ◽  
Volume Element ◽  
Unidirectional Fiber ◽  
Representative Volume

The aim of present work is focused on the evaluation of elastic and thermal properties of unidirectional fiber-reinforced polymer composites with different volume fractions of fiber up to 0.7 using micromechanical approach. Two ways for calculating the material properties, that is, analytical and numerical approaches, were presented. In numerical approach, finite element analysis was used to evaluate the elastic modulus and thermal conductivity of composite from the constituent material properties. The finite element model based on three-dimensional micromechanical representative volume element (RVE) with a square and hexagonal packing geometry was implemented by using finite element code ANSYS. Circular cross section of fiber and square cross section of fiber were considered to develop RVE. The periodic boundary conditions are applied to the RVE to calculate elastic modulus of composite. The steady state heat transfer simulations were performed in thermal analysis to calculate thermal conductivity of composite. In analytical approach, the elastic modulus is calculated by rule of mixture, Halpin-Tsai model, and periodic microstructure. Thermal conductivity is calculated analytically by using rule of mixture, the Chawla model, and the Hashin model. The material properties obtained using finite element techniques were compared with different analytical methods and good agreement was achieved. The results are affected by a number of parameters such as volume fraction of the fibers, geometry of fiber, and RVE.

scholarly journals Receptacle interacts with consumers’ need for touch to influence tea-drinking experience

2020 ◽  
Vol 122 (9) ◽  
pp. 2981-2992
Author(s):  
Chujun Wang ◽  
Yubin Peng ◽  
Charles Spence ◽  
Xiaoang Wan
Keyword(s):  
Willingness To Pay ◽  
Physical Properties ◽  
Significant Influence ◽  
Material Properties ◽  
Design Methodology ◽  
Room Temperature ◽  
Haptic Perception ◽  
Content Type ◽  
Ceramic Glass ◽  
Tea Drinking

PurposeThis study was designed to investigate how the material properties of the tea-drinking receptacle interact with a participant's motivation and preference for extracting and using information obtained via haptic perception, namely the need for touch (NFT), to influence his or her tea-drinking experience.Design/methodology/approach72 blindfolded participants were instructed to sample room temperature tea beverages served in a cup that was made of ceramic, glass, paper or plastic. They were then asked to rate how familiar they were with the taste of the beverage, to rate how pleasant the taste was and to specify how much they would like to pay for it (i.e. willingness-to-pay ratings).FindingsThe material of the receptacles used to serve the tea exerted a significant influence over the pleasantness ratings of the tea and interacted with the participants' NFT, exerting a significant influence over their willingness to pay for the tea. Specifically, high-NFT participants were willing to pay significantly more for the same cup of tea when it was served in a ceramic cup rather than in a paper cup, whereas the low-NFT participants' willingness to pay for the tea was unaffected by the material of the receptacles.Originality/valueOur findings suggest that consumers may not be equally susceptible to the influence of the receptacle in which tea, or any other beverage, is served. Our findings also demonstrate how the physical properties of a receptacle interact with a consumer's motivation and preference to influence his or her behavior in the marketplace.

Laser Micro Welding of Dissimilar Material of Aluminum and Copper Alloys

2017 ◽  
Vol 882 ◽  
pp. 18-22
Author(s):  
Zazuli Mohid ◽  
M.A.A. Rosely ◽  
N.H. Rafai ◽  
Mohammad Zulafif Rahim ◽  
Mohd Rasidi Ibrahim ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Material Properties ◽  
Copper Alloys ◽  
Welding Process ◽  
Processing Parameters ◽  
Material Behavior ◽  
Fundamental Study ◽  
Melted Zone ◽  
New Material

Copper and aluminum are widely used in electronic industries for their excellence in electric and thermal conductivity. Joining these different material in scale of micro is hardly difficult for their obvious different in thermal properties. Melting these materials during welding process will create intermetallic compound which possesses new material properties. The melted zone became extremely brittle thus increase the possibility of failure due to cracks and concentrated loads. To overcome this problem, fundamental study is needed to characterize the material behavior against heat induction under various processing parameters. This study is an attempt to characterize the performance of Nd-YAG laser in micro joining of Al 1100 and Cu 101.

Haptic Perception of Material Properties

2017 ◽  
pp. 225-249
Author(s):  
Astrid M.L. Kappers ◽  
Wouter M. Bergmann Tiest
Keyword(s):  
Material Properties ◽  
Haptic Perception

Effects of workpiece thermal properties on machining-induced residual stresses - thermal softening and conductivity

2007 ◽  
Vol 221 (9) ◽  
pp. 1387-1400 ◽  
Author(s):  
M Nasr ◽  
E-G Ng ◽  
M Elbestawi
Keyword(s):  
Thermal Properties ◽  
Residual Stresses ◽  
Material Properties ◽  
Thermal Softening ◽  
Cutting Conditions ◽  
Arbitrary Lagrangian Eulerian ◽  
Dry Cutting ◽  
Workpiece Material ◽  
Chip Surface ◽  
Element Analysis

Workpiece material properties play a key role in controlling the cutting process, and consequently residual stresses. Different materials may behave totally differently under the same cutting conditions; they may produce different types of chip, surface finish, residual stress, etc. The current work examines the effects of two workpiece thermal properties, specifically thermal conductivity ( k) and thermal softening exponent ( m), on machining-induced residual stresses, in order to understand their role in controlling the residual stresses induced in different materials, when cut using the same cutting conditions. Finite element analysis was used to model the process of orthogonal dry cutting, using the arbitrary-Lagrangian-Eulerian technique, and then predict the induced residual stresses. In order to isolate the effects of the examined properties ( k and m), only one material (stainless steel AISI 316L) was used as the base workpiece material, and different values were assigned to its k and m, one at a time. Values up to four times the original magnitudes were used, covering almost all commercial steels and stainless steels. All other material properties and cutting conditions were kept constant. Surface tensile residual stresses were induced in all cases, and a strong effect was found for both properties, k has mainly affected the thickness of the tensile layer, where higher k resulted in thicker layers; it has also induced higher surface tensile residual stresses. On the other hand, higher m (lower softening effects) has significantly increased the magnitude of surface tensile residual stresses, with almost no effect on the thickness of the tensile layer.

A Review of Simulators with Haptic Devices for Medical Training

2016 ◽  
Vol 40 (4) ◽  
Author(s):  
David Escobar-Castillejos ◽  
Julieta Noguez ◽  
Luis Neri ◽  
Alejandra Magana ◽  
Bedrich Benes
Keyword(s):  
Medical Training ◽  
Haptic Devices
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